Air purifier



FIG. 1 is a perspective view of the air purifier embodying the present invention, shown in a closed configuration;

FIG. 2 is a front elevation view thereof;

FIG. 3 is an opposite rear elevation view thereof;

FIG. 4 is a side elevation view thereof;

FIG. 5 is an opposite side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a front elevational view of the air purifier, shown in an open configuration; and,

FIG. 9 is a side elevation view thereof.

The broken line showing of parts of the drawings is included for the purpose of illustrating use and environment and forms no part of the claimed design. 

The ornamental design for an air purifier, as shown and described. 